When I try to use Xcode5 dp6 to run app on devices. I got an error of
No Provisioning Profiles with a valid Signing identity found issue
How can I resolve this issues.

When I try to use Xcode5 dp6 to run app on devices. I got an error of
No Provisioning Profiles with a valid Signing identity found issue
How can I resolve this issues.

All you need to do is:
1. go to Certificates, Identifiers & Profiles in the Developer Center
2. create a new provisioning profile in "Provisioning Profiles" / "Distribution"
3. download the profile and open it
4. restart Xcode
You should now be able to select one of the Team Provisioning profiles to run in debug mode.
I had exactly the same issue and I manage to sort it by deleting provisioning certificate from Keychain app and I download it again via Xcode (Xcode -> Preferences... -> Accounts). If it doesn't help try remove certificate and provisioning profile. After than make sure you set up everything right in Build Settings (Code signing). Hope this help